Drier



Alig. 10, 1954 MARGOLIS ETAL 2,685,746

DRIER Filed July 1, 1952 2 Sheets-Sheei: 2

INVENTORS Harry Zia? Lmarz Z zfls ifgryo 5 Mam M Patented Aug. 10, 1954 UNITED STATES PATENT OFFICE DRIER Louis Margolis and Harry Lichtman, New York, N. Y.

Application July 1, 1952, Serial No. 296,562

'5 Claims. 1

Our invention is an improvement in drying apparatus particularly a machine for drying sheets of any material, bearing photographic reproductions, printing in ink or other visible representations.

An important object of this invention is to provide a drying mechanism of relatively small size and large capacity, constructed so that it can be easily loaded and unloaded, and very efiicient in operation.

Another object is to provide a drying machine containing heating units, such as electric lamps, and means for supporting the sheets to be dried so as to expose them to said units and dry them quickly, evenly and uniformly over their entire extent.

These and other objects and advantages are made apparent in the following detailed description and the novel characteristics are pointed out in the claims. The structure illustrated in the drawings represents the best form of the invention now known to us, but changes in various details and the shape and arrangement of the different parts of the machine may be made Without really altering or deviating from the general design in which the invention is embodied.

On said drawings:

Figure 1 is a vertical section on lines I-! of Figures 2 and 3 of the entire drying apparatus.

Figure 2 is a rear view of the casing of a ventilator unit therefor.

Figure 3 is a top plan of the apparatus with ventilating unit removed.

Figure e is a front elevation of the machine without the ventilator unit; and

Figure is a section on line 5-5 in Figure 4.

A frame work comprising uprights I, upper horizontal beams 2 and lower horizontal beams 3, and generally square in horizontal cross sec tion supports a round turntable 4 which is connected to be revolved by an electric motor 5 below the table. Just above the table are heating members such as electric lamps 6 mounted in fixed cross bars 7. The table is fixed to the upper end of a vertical shaft 8 mounted in a bearing 5 in the frame work and fixed on the shaft is a gear I0, driven by the motor 5 through reduction gearing I I. This gearing is coupled to the gear 9 by a shaft I2. Motor 5, bearing Tand gear casing II are all mounted on a vertically movable base plate I4. The sheets to be dried are laid on the table 4 after being inserted through the open front of the framework between the table 4 and the heaters 5. The motor operates the reduction gearing through pulleys connected by a belt as indicated at I5.

The framework is open at the top and resting thereon is a ventilator unit comprising a casing I6 enclosing a fan blower I1 and deflector plates I8. The fan is at the rear of the casing and the baffle plates I8 are fixed inside the casing be tween the front and back in position to deflect the air impelled by the fan IT down past the heaters .6 and directly upon the table 4 and the sheets it carries on its upper surface. The casing is flush with the front and sides of the framework but projects at the back. The fan rests on a supporting plate or base I9 and a transverse vertical web 20 in the casing i6 extends from the upper end of the frame work downward and forms with the back of the casing and adjacent portions of the sides an inlet flue 23 for air. Below the base I9 in the web is a transverse opening 22. Inside the casing are angle pieces 23 at the front which project and engage the horizontal bars 2 at the top of the framework and a cross bar 24 in the casing rests on the rear of the framework at the top to support the casing; and side bolts may be inserted in holes 25 to secure the casing to the rear uprights and hold the casing firmly in place.

The blower fan is driven by a motor 26, or by gearing if desired, and suitable electrical connections, not shown, are provided. The sheets to be dried are laid on the table 4 and arranged as required in one layer, with the table in uppermost position, and it rotates under the lamps till the drying is completed. Other sheets are then added and the table is lowered bit by bit till nomore layers can be put on and at the end of the run all the sheets can be removed at once.

During the drying operation the fan blower I? revolves and air is impelled past deflectors I8 and down on the sheets carried by the table 5. Some .air warmed by the heaters 6 returns to the inlet flue 2i by way of the opening 22 in the web 20.

The up and down movement of the table 3 and base plate I 4 is accomplished by means of cables 21 which lift and lower the table according to the operation of a horizontal rod 23 extending from front to rear of the framework at the top. This shaft is mounted in a bearing 25 at the front and a hearing as in back and on its front end outside of the framework is a crank disk 3!. Between the bearings the shaft is threaded and passes through the threaded bore of a block 32 that has in its under face a groove receiving a key rod 33 fixed to the framework under the casing I5 to prevent the block from rotating. To this block the cables 27 are affixed. They pass over pulleys 34 on vertical axes and guide pulleys 35 on horizontal axes, one at each corner of the framework, down to the level of the base plate l4 and are made fast at their lower ends. As the crank disk 3! is turned the rod 29 is rotated to move the block 32 to pull the cables 2! up and raise the table, or let them down to lower the table 3. I

The base plate [4 for the motor 5, bearing 3, and reduction gear casing H rests on a square open lower frame 35. Above this frame isa similar frame 3i, and the two frames consist of bars 38 united at the ends, and these frames are joined by vertical bars 39. The table s is over the upper frame ST. The cables 2i are made fast at their lower ends to the frame as in any suitable manner as by connecting the ends to diagonal pins ill spanning the corners of the frame 3?. The cables are included in Figures 2 and 3, but omitted from Figure 1, for convenience.

The uprights and horizontal beams 2 and 3 are preferably angle bars suitably bevelled on both flanges at their ends, so as to be flush and make a neat fit, and said ends can be welded or otherwise fastened together; The bars 39 are also angle bars fitting the inside of the uprights l. The upper frame 3i has a iiXed cross bar ll with a bearing 32 for the shaft 8. The table has a socket or hub $3 in its lower side in which the upper end of the shaft 3 is made fast.

The pulleys 3d are mounted on a cross bar 45 extending from side to side of the framework just below the upper beams 2. The ends 45 of this bar are bent up and welded or otherwise secured to the vertical flanges of the beams 2 at the sides of the framework. The bar it carries shouldered studs ie on which the pulleys 3d are pivoted. The rear bearing SE} for the rod 2% is on the bar Ml, and the front bearing 29 is secured to the inner face of the vertical flange of the beam 2 across the front of the framework.

The pulleys 35 are mounted on pivot studs in bearing plates ll secured to the inner faces of the vertical flanges of the top horizontal beams 2. The pivot studs 43 project at the proper angles from the plates i'l, so as to hold the pulleys 35 in required positions with respect to the pulleys 3%. All the pulleys are grooved.

The key rod 33 is joined to the bottom of the bar i l and to the front bearing 3! of the threaded cable rod 28. This rod 28 has pins 59 adjacent the bearings it and 3! to prevent longitudinal movement of the rod 28.

The framework has rollers or casters 553 at the lower ends of the upright l, and may carry a switch 5! to control the circuit of the motors 5 and 25, and a counter 52 to indicate the number of revolutions of the table 4. The attendant allows the drying to continue during a predetermined number of revolutions of the table for each layer of sheets which he deposits thereon.

The construction shows the general combinaticn of parts of the apparatus and the invention is not limited to the precise shape and relative positions of the parts as illustrated. The operating rod or member 28 and block it which move the cables need no stop, as the pull on the cables 21' is never sufficient to cause the block to move along the length of the rod 28.

Having described our invention, what we believe to be new is:

l. Drying apparatus comprising a horizontal table, means for supporting said table so that it can be raised and lowered, means for vertically adjusting said table and said supporting means,

4 means for revolving said table in all positions of adjustment, and heating means and a ventilator unit above said table, said supporting means comprising an upper frame and a lower frame in said framework, said revolving means including a motor and gearing connecting said motor to the table, the motor and gearing being mounted in one of said frames, and the table above the upper frame, said adjusting means comprising cables connected to one of said frames and an operating member for said cables.

2. Drying apparatus comprising a horizontal table, means for supporting said table so that it can be raised and lowered, means for vertically adjusting said table, means for revolving said table in all positions of adjustment, and heating means and a ventilator unit above said table, said supporting means comprising an upper frame and a lower frame in said framework, said revolving means including a motor and gearing connecting said motor to the table, the motor and gearing being mounted in one of said frames, and the table above the upper frame, said adjusting means comprising cables connected to one of said frames and an operating member for said cables, said unit comprising a casing resting on the top of the framework, an air impeller and deflector plates in the casing above the framework and an air inlet flue at the rear below the top of said framework.

3. Drying apparatus comprising a horizontal table, means for supporting said table so that it can be raised and lowered, means for vertically adjusting said table, means for revolving said table in all positionsof adjustment, and heating means and a ventilator unit above said table, said supporting means comprising an upper frame and a lower frame in said framework, said revolving means including a motor and gearing connecting said motor to the table, the motor and gearing being mounted in one of said frames, and the table above the upper frame, said adjusting means comprising cables connected to one of said frames and an operating member for said cables, said unit comprising a casing resting on the top of the framework, an air impeller and deflector plates in the casing above the framework and an air inlet flue at the rear below the top of said framework, said flue having a return inlet adjacent said heating means.

a. Drying apparatus comprising an upright frame, a horizontal table therein, means in said framework for supporting said table so that it can be raised and lowered, means for vertically adjusting said table and said supporting means, the table being above said supporting means, means carried by the supporting means for revolving said table in all positions of adjustment, heating means and a ventilator unit mounted on the top of said framework, the ventilator unit comprising a casing extending downward below the top of the frame at the sides and rear, said casing having a transverse vertical web between its sides at the rear enclosing an air inlet flue with open lower end, said web having an opening above said end for return of air in said flue, said casing also containing an impeller fan at the rear in line with said inlet flue.

5. Drying apparatus comprising an upright frame, a horizontal table therein, means in said framework for supporting said table so that it can be raised and lowered, means for vertically adjusting said table and said supporting means, the table being above said supporting means, means carried by the supporting means for re- 2,685,746 5 6 volving said table in all positions of adjustment, References Cited in the file of this patent heating means and a ventilator unit mounted on UNITED STATES PATENTS the top of said framework, said means for vertisally adjusting the table and supporting means Number Name Date comprising cables attached to the supporting 5 247,160 Burnash sept- 1881 means, pulleys at the top of the framework over 11412598 Y et a1 11, 1922 which said cables are passed, a block adjacent the 2,113,770 Rlchardson 1938 top of the framework, a horizontal guide mov- 2,182,294 Kuhnle 1939 ably supporting said block as?) 1a threaded screw FOREIGN PATENTS or impar ing mo ion 0 sai ock o pul upon 10 M or release said cables to raise or lower the table Numb Country Date and Supporting mearm 656,271 Great Brltaln Aug. 15, 1951 

